This is an attempt to port a syntax similar to rspec or chai to rust.
I find the errors rust's built-in assert! gives pretty limited, and I personally like this sort of syntax better so I decided to start this as learning exercise.
You'll need to use rust's nightly builds, as the beta/stable builds don't support the syntax extensions yet.
Add this as a dependency to your Cargo.toml and run cargo build:
[dependencies.rustspec_assertions]
git = "https://github.com/uorbe001/rustspec-assertions.git"
Now you should be able to use these assertions in your tests by 'using' them:
```
use self::rustspecassertions::{expect, bele, eq, belt, begt, bege, contain, betrue, befalse, besome, be_none};
fn beleinttest() { expect(1i).to(bele!(2i)); }
fn eqf64test() { expect(1.1f64).to(eq!(1.1f64)); } ```
The crate relies on macros to be able to report better errors, so you'll need to add this to your test.rs, lib.rs or main.rs file:
```
```
Here are some of the matchers already implemented:
expect(2i).to(eq!(2i));
expect(2i).not_to(eq!(3i)); // not_to works with all the matchers
expect(3i).to(be_gt!(2i));
expect(3i).to(be_ge!(3i));
expect(2i).to(be_lt!(3i));
expect(2i).to(be_le!(2i));
expect(vec![1i, 2i]).to(contain!(2i));
expect(true).to(be_true!());
expect(false).to(be_false!());
expect(Some(1i)).to(be_some!());
expect(None::<int>).to(be_none!());
For a complete list of matchers and more examples, please check the tests.
This is designed to work with rustspec so I might end up making decisions further down the line to improve error reporting which might not be ideal for other options.